Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56f0fbf62d870eb2404f8b3abc9b4a13a8c2c8324714d9b3541ce9c4085e8474' 
  AND token = 'Ve0q5kL0wti6bFTuOIhXrVldpaApZ8QBfWvOJeEbOKM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}